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Finding the Fourth Proportional to 67,400.90, 101,036.55 and 52,399.70

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Solution

The fourth proportional to 67,400.90, 101,036.55 and 52,399.70 is: 78,549.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,400.90 : 101,036.55 = 52,399.70 : x
  2. Step 2: Convert to fraction form
    67,400.90/101,036.55 = 52,399.70/x
  3. Step 3: Cross multiply
    67,400.90x = 101,036.55 × 52,399.70
  4. Step 4: Simplify right side
    67,400.90x = 5,294,284,909.04
  5. Step 5: Solve for x
    x = 5,294,284,909.04/67,400.90
  6. Step 6: Final answer
    x = 78,549.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.